Automatic sash-lock.



J. B. HARPER.

AUTOMATIC SASH LOCK.

APPLICATION FILED APR. 9', 1915.

Patented Dec. 7, 1915.

JZJJQZZZk/ W Witnesses Inventor,

I I by I r I Attorneys,

COLUMBIA PLANDGR UN D C UNITED STATES PATENT OFFICE.

JESSE B. HARPER, OF TIMMONSVILLE, SOUTH CARULINA, ASSIGNOR OF ONE-HALF TO WISTER L. COPELAND, OF TIMMONSVILLE, SOUTH CABGLINA.

AUTOMATIC SASI-I-LOCK.

cense.

Application filed April 9, 1915.

Timmonsville, in the county of Florence and State of South Carolinmhave invented a new and useful Automatic Sash-Lock, of which the following is a specification.

The present invention appertains to sash locks, and aims to provide a novel and improved device for locking a window sash against movement in one direction, the device being adapted to be employed for either holding the sash closed or opened.

It is the object of the invention to provide a latch device adapted to be carried by a sash, and which is extremely simple and iiiexpensive in construction, but at the same time, which is thoroughly practical and etiicient for cooperation with a keeper carried by the jamb of the window frame or casing for holding the sash in the desired position, and in order that the sash may be released from the inside when desired.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combi nation and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed Without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein Figure 1 is an elevation of the device as applied. Figs. 2 and 3 are enlarged cross sectional views taken on the lines 2-2 and 33, respectively, of Fig. 1.

In carrying out the invention, there is provided an elongated rectangular plate 1 which may be cut or stamped from suitable sheet metal or other stock, and which is secured in an upright or vertical position to the inner side of one stile of the sash 2, by means of screws or other securing elements 1 engaged through the ends of the plate 1 and taking into the stile. A latch lever 8 is fulcrumed or pivoted to the plate 1, and to this end, the plate is provided intermediate of its ends with a tongue or ear 4 bent back from one edge to project toward and terminate close adjacent the other edge of the plate, and the intermediate portion of the lever 3 is fulcrumed between the plate Specification of Letters Patent.

PatentedDec. *7, 1915..

Serial No. 20,235.

l and tongue i, by means of a rivet or other pivot member 5 engaged through the plate, lever and tongue;

One arm, designated 7, of the lever 3 pro vides a pawl or dog engageable with a keeper plate 8 which is secured at the proper point to the jamb 8 of the window frame or casmg, screws or other securing elements 9 being employed for securing the plate 8 to r.

the jamb. The plate'S is provided with an inclined face 10 and a'shoulder ll at the end of the said face, and when the sash is moved to the position at which it is to be locked the arm or pawl 7 is adapted to drag across the face lOand then to snap into engagement with the shoulder 11 forholding the sash in position. The other arm, desig nated 12, of the'lever 3 is providedwith a terminal finger piece 13, and that edge of the plate 1 from which the tongue & is bent, is provided with an outstanding stop 14 with which the arm 12 cooperates for limiting the motion of the lever 3. This stop 14 is bent or struck at right angles to the plate 1 from the respective edge thereof.

A spring is employed for normally swinging the lever 3 against the stop 14, whereby the lever will be held in active position, and to this end, a portion 15 is bent back from that edge of the blade 1 opposite the stop 14, and the portion 15 is provided with a, terminal lug 16, while the arm 12 of the lever 3 is provided with a cooperating lug 17. A coiled wire expansion spring 18 is disposed between thearm 12 and portion 15, and its terminal convolutions embrace the lugs 16 and 17 whereby the spring is held in place. The spring 18 swings the lever 3 against the stop 14, but allows the lever to swinger yield when encountering the inclined face 10 of the keeper plate. Since the portions 4, l4 and 15 are bent from the edges of the plate 1, the body or plate of the latch device may be conveniently struck or fashioned from sheet metal or other suitable stock, and at a comparatively small cost. The lever 3 in being fulcrumed between the plate 1 and tongue 4 will be effectively held in place, and the arm 12 of the lever is movable between the stop H and portion or spring seat 15 which will limit the movement of the lever properly.

When the plates 1 and 8 are properly attached to the sash and .jamb, the sash in being moved to the position where it is to be locked, will cause the arm or pawl 7 of the lever 3 to snap into abutment with the shoulder 11 for holding the sash in place. When the finger piece 13 is swung toward the jamb, the latch will be released from the keeper plate 8, and the sash may then be moved. It is to be noted that when the latch lever is released from the keeper plate, and the sash moved, the lever B will bear against the stop 1% to prevent the arm or pawl 7 from scraping against or sliding along the jamb, which would be liable to mar the same, or cause the sash to be locked at an undesirable point.

lVhen the device is employed in one position upon a window construction, it is adapted to lock the sash in lowered position, and when the device is reversed, it will lock the sash in a raised position, as will be apparent to those versed in the art. The other advantages and capabilitiesof the invention are thought to be obvious from the foregoing', taken in connection with the drawing.

Having thus described the invention, what is claimed as new is:

A sash holder, embodying an elongated plate having a tongue bent back from one portion and having a finger piece at its end,v

the other arm forming a pawl projecting beyond the second mentioned edge of the plate, said portion and first mentioned arm having lugs projecting toward one another, and acoiled wire expansion spring between said portion and first mentioned arm and having its ends engaging said lugs, said spring normally swinging the first mentioned arm of the lever against the stop.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence oftwo witnesses.

JESSE B. HARPER.

Witnesses R. V. ATKINS, W. H. LowMAN.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

